Machine for mixing mineral compounds



m Model.) 2 Sheets-Sheet 1*.

M. BROUGHTON. MACHINE FOR MIXING MINERAL comomms.

No. 402,393. Patented Apr. 30, 1889.

(N9 Model.) 2 Sheens-Shet 2.

M. BR OUGHTON. MAGHINE FOR MIXING MINERAL COMPOUNDS.

N0; 402,393. Patented Apr. 30 1889.

INVENTOR.

- BY ATTORNEYS N PEI'ERS, HuoloI-ikhngnplwr, Wnhingioll'. D. C.

U ITED STATES PATENT OFFICE.

MILTON BROUGHTON, or SYRACUSE, NEW YORK.

MACHINE FOR MIXING MINERAL COMPOUNDS.

SPECIFICATION forming part of Letters Patent No. 402,393, dated April.30, 1889.

' Application filed April 3D, 1888. Serial No. 272,311. (No model.)

verized ingredients of a dry compound which is designed to be mixed withwater and to be used as plaster for the walls of buildings and analogousarchitectural purposes; and the in vention consists in an improvedorganization of a machine which is capable of performing the aforesaidfunction ina most thorough and expeditious manner, all as hereinaftermore fully described, and specifically set forth in.

the claim.

In the accompanying drawings, Figure 1 is an end elevation of themachine. Fig. 2 is a vertical transverse section of the central portionof the machine. Fig. 3 is a top plan view. Fig. 4 is a horizontaltransverse section on lines 00 00, Figs. 1 and2; and Fig. 5 is adetached top plan view of two adjacent paddles of the two shafts.

Similar letters of reference indicate corresponding parts.

A represents the case in which the operation of mixing the dry mineralsor other substances is to be performed. Said case is either formed withor otherwise provided with a hopper, B, at the top, and between thishopper and the subjacent case are gates C O, preferably hinged to thesides of the base of the hopper, and when in a closed position aresomewhat inclined toward each other and meet with their free edgescentral over the case A, as shown in Fig. 2 of the drawings. Said gatesare operated and sustained in their closed position by cords or chains19 b, each; shafts.

connected at oneend to one of the gates and connected at the oppositeend to pulleys c c, secured to a shaft, d, which is extended to op=-posite ends of the case and is provided at one or both ends with alever, e, by which to turn said shaft. A dog, f, connected to the caseand engaging a ratchet-wheel, g, attached to the shaft (1, serves toprevent the reverse movement of said shaft, and thereby retain the gatesC C in their closed position.

The bottom of the case A is formed with troughs D D, which arepreferably of semicircular or segmental form in cross-section, and arearranged parallel side by side and in proximity to each other. Each ofsaid troughs has its longitudinal central section, D, hinged at one ofits longitudinal edges, to serve as a trap-door by which to empty thetrough when required. Said trap-doors are fastened to the hinge-rods,and to theends of the latter are attached levers Z l for turning saidrods and doors attached thereto. The levers Z Z are connected by a bar,Z, so as to cause them to move in unison. A pawl, m, on one of thelevers, engaging a stationary ratchet, 'It, serves to confine thelevers, so as to retain the trapdoors D D in their closed position.Longir tudinally through the axis of each of said troughs is extended ashaft, 0, and both shafts pass through stuffing-boxes h h in the ends ofthe case A, and are j ournaled in suitable boxes or bearings, 2 on thesupportingframe F of the apparatus. The shafts 0 0 have se cured to themgears I I, which mesh with each other, and thus, when in motion, causethe said shafts to rotate in opposite directions from each other, one ofthe shafts being provided with the driving-pulley H, to receive motionfrom a driving-belt. Each shaft 0 is armed with paddles P P, distributedover the length of the shaft and projecting radiallyand successively atdifferent angles therefrom. Said paddles are of proper lengths to reachpart way toward the center betweenthe two shafts and have their freeends passing in proximity to the interior of the troughs. All of thepaddles P P of both shafts stand with their flat sides oblique andnearly or quite at one and the same angle in relation to the axes of theSaid paddles rotating in opposite directions, with the free ends thereofpassing only part way toward the center, between the shafts and inproximity to the interior of the troughs, and to each other, in theirupward movement, under the longitudinal central portion of the case A,causes them to lift the substance from the bottoms of the troughs, andin doing so said paddles of one shaft cast said substance toward one endof the case, while the paddles of the other shaft cast the substancetoward the opposite end of the case. This reversed action causes theaforesaid substance to become uniformly distributed throughout thelongitudinal central portion of the base of the case A, and at the sametime thoroughly and uniformly mixed throughout.

One of the salient features of my invention is the shape of the paddle,having its flat sides at a uniform angle in relation to the axis of theshaft and reaching only part way toward the center between the shafts,thereby causing the substance under treatment to be east along thecenter between the troughs, and in approachin g said center the massesfrom the two troughs are thrown toward opposite ends of the machine.

In order to promote the lifting action of the paddles, I form the samewith ribs a a along the lower edges of the ascending paddles, and,

preferably, also with ribs a a across the free ends of the paddles, asbest seen in Fig. 5 of the drawings.

Having described my invention,whatI claim as new, and desire to secureby Letters Patent, is-

In a machine for mixing minerals, &c., the combination of troughsarranged parallel side by side, shafts extending longitudinally throughsaid troughs and geared to rotate in opposite directions, and paddlesprojecting from the shafts only part way toward the center between theshafts and standing with the entire lengths of their fiat sides at thesame angle in relation to the axes of the shafts, substantially asdescribed and shown.

In testimony whereof I have hereunto signed my name, in the presence oftwo witnesses, at Syracuse, in the county of Onondaga, in the State ofNew York, this 27th day 45 of April, 1888.

MILTON BROUGIITON. Witnesses:

C. L. BENDIXON, MARK W. DEWEY.

